LTC2645IMS-L8#TRPBF

Overview

The LTC2645IMS-L8#TRPBF is a quad 8-bit PWM-to-voltage output DAC from Analog Devices, housed in a 16-lead MSOP package. It integrates a high-accuracy, low-drift 10ppm/°C reference, providing a full-scale output of 2.5V. The device features rail-to-rail buffered outputs capable of sourcing/sinking up to 5mA at 3V or 10mA at 5V. It operates on a single 2.7V to 5.5V supply with digital inputs supported by a separate 1.71V to 5.5V IOVCC. Key electrical parameters include ±0.5 LSB maximum DNL and ±0.05 LSB maximum INL for the L8 variant.

Feature Summary

• Quad 8-bit resolution with integrated 10ppm/°C reference
• Rail-to-rail buffered voltage outputs with up to 10mA drive capability
• No latency conversion; updates settle within 8µs typically
• Pin-selectable internal (2.5V) or external reference modes

Applications

• Digital Calibration
• Trimming and Adjustment
• Level Setting
• Process Control and Industrial Automation
• Instrumentation

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2,500 units. Confirm the IMS designation corresponds to the industrial temperature grade (-40°C to 85°C). Ensure the L8 suffix matches the required 8-bit resolution. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current production status and lead times.

Selection Notes

Select this component when an 8-bit resolution is sufficient for the application's accuracy requirements. The L8 variant offers tighter linearity specifications (±0.05 LSB INL) compared to higher-resolution counterparts. Consider the 16-lead MSOP package size constraints. Verify that the input PWM frequency range (up to 100kHz for 8-bit) aligns with the system timing. Evaluate power consumption needs, as the device draws approximately 4mA at 3V.

Part Context

This part belongs to the LTC2645 family, which includes 12-bit (LTC2645-L12), 10-bit (LTC2645-L10), and 8-bit (LTC2645-L8) variants. All share the same pinout and core functionality but differ in resolution and linearity performance. The IMS-L8#TRPBF specifically denotes the industrial grade, 8-bit resolution, and tape-and-reel packaging format.

Replacement Considerations

The LTC2645IMS-L8#PBF is a verified equivalent offering identical electrical characteristics and functionality in tube packaging instead of tape and reel.